US3361462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mortise type latch assembly with reversible blocker means for knob detent
Assignee: Von Duprin LLC
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Filing: 1966-03-07
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Granted: 1968-01-02
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Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 John R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
E; E05; E05B; E05B55/00; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0971; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T292/1097; Y10T292/1098; Y10T292/96; Y10T70/00; Y10T70/80; Y10T70/8865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A DEVICE OF THE CLASS DESCRIBED, A LATCH CASE HAVING A BOUNDARY FLANGE OPEN AT ONE SIDE, A COVER PLATE COOPERABLE WITH SAID FLANGE TO DEFINE A CHAMBER, A FACE PLATE, MEANS SECURING SAID FACE PLATE TO SAID CASE TO CLOSE SAID SIDE, SAID FACE PLATE BEING FORMED WITH AN OPENING THERETHROUGH, A LATCH BOLT RECIPROCABLY MOUNTED IN SAID CHAMBER AND HAVING A HEAD PROJECTABLE THROUGH SAID FACE PLATE OPENING, RETRACTOR MEANS MOVABLY MOUNTED IN SAID CHAMBER AND COOPERABLE WITH SAID LATCH BOLT TO RETRACT THE SAME, A FIRST CAM MOUNTED IN SAID CHAMBER FOR OSCILLATION ABOUT A FIXED AXIS AND COOPERABLE WITH SAID RETRACTOR TO ACTUATE THE SAME, SAID FIRST CAM BEING PROVIDED WITH ABUTMENT MEANS, A SECOND CAM MOUNTED IN SAID CHAMBER FOR OSCILLATION ABOUT SAID FIXED AXIS AND COOPERABLE WITH SAID
Claim 2
Dependent Claim
135 words
IN A DEVICE OF THE CLASS DESCRIBED, A LATCH CASE HAVING A BOUNDARY FLANGE OPEN AT ONE SIDE, A COVER PLATE COOPERABLE WITH SAID FLANGE TO DEFINE A CHAMBER, A FACE PLATE, MEANS SECURING SAID FACE PLATE TO SAID CASE TO CLOSE SAID SIDE, SAID FACE PLATE BEING FORMED WITH AN OPENING THERETHROUGH, A LATCH BOLT RECIPROCABLY MOUNTED IN SAID CHAMBER AND HAVING A HEAD PROJECTABLE THROUGH SAID FACE PLATE OPENING, RETRACTOR MEANS MOVABLY MOUNTED IN SAID CHAMBER AND COOPERABLE WITH SAID LATCH BOLT TO RETRACT THE SAME, A FIRST CAM MOUNTED IN SAID CHAMBER FOR OSCILLATION ABOUT A FIXED AXIS AND COOPERABLE WITH SAID RETRACTOR TO ACTUATE THE SAME, SAID FIRST CAM BEING PROVIDED WITH ABUTMENT MEANS, A SECOND CAM MOUNTED IN SAID CHAMBER FOR OSCILLATION ABOUT SAID FIXED AXIS AND COOPERABLE WITH SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |